US Bridges

Greenbrook DR over San Ramon Creek

Fair

Contra Costa County, California · 0.3 MI E Camino Ramon · Structure no. 28C0394

Built
1965
60 years old
Condition
Fair
inspected March 2024
Type
Tee Beam
Concrete Continuous
Length
59 ft
2 main spans
Daily traffic
7,643
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Greenbrook DR over San Ramon Creek is a concrete continuous tee beam carrying Greenbrook DR over San Ramon Creek in Contra Costa County, California. It was built in 1965, so it is 60 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 7,643 vehicles a day, roughly 1% of them trucks, projected to reach 4,704 by 2041. The structure is 59 ft (18 m) long and 50 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesGreenbrook DR
CrossesSan Ramon Creek
Location0.3 MI E Camino Ramon
RouteCity Street 0
Coordinates37.79496, -121.97784
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.8 US tons
Inventory rating25 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length59 ft (18 m)
Longest span46 ft (14.1 m)
Deck width50 ft (15.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,643 (2020)
Projected traffic4,704 by 2041
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Greenbrook DR over San Ramon Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is Greenbrook DR over San Ramon Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2024.

How much traffic does Greenbrook DR over San Ramon Creek carry?

About 7,643 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Greenbrook DR over San Ramon Creek?

The structure is 59 ft (18 m) long with a longest span of 46 ft (14.1 m) and a deck 50 ft wide.

Who owns Greenbrook DR over San Ramon Creek?

It is owned by the City or Municipal Highway Agency.